As an organizer for the local community center ralph is always looking for ways to convince older adults to get active. recently he found a 2016 study by han and others showing that the strongest predictor of lower risk for cardiovascular disease. group of answer choices

Volunteering was the strongest predictor of lower risk for cardiovascular disease.

Explanation:

Many studies have proved that the  volunteering or helping others helps reduce risk factors of both cardiovascular disease and metabolic syndrome among older people.

It reduces hypertension, blood glucose levels, regulates lipid metabolism, and reduces central adiposity; all of which greatly reduces the incidence of cardiovascular diseases and metabolic disorders.  

Further, volunteering boosts the morale of a person; gives a sense of content, peacefulness and happiness; enhances communication, interaction and social skills; makes one to be calm and composed; and gives a great psychological strength; all of which reduces stress and anxiety which in turn helps to maintain a healthy heart.

i've never heard of it before.